Mining-machine



. B. moli. Mining Machine."

L e d 0 M 0 N fk Patented June 7,1881.

l fides# PETERS Phm-Lilmywr. wnnhingkun. Dy c.

oscillatory movement on the spindles c of the crank-formed axle C. Thejournal of the crank occupies a bearing-box, D, attached to the top ofthe valve-chest E upon the top of the cylinderF, thus forming the meansof support of the cylinder and attached parts. As the cylinder issupported on the crank-axle the elevation of the cylinder may be changedby turning the crank up or down, and the relative position of thecylinder to the wheels may be otherwise changed by the same means. Thewheel-spindles c of the axle are not made in one piece with the crank,but carry sockets c', in which the side arms, c2, of the crank admit ofendwise adjustment to regulate the length of the crank, thus adjustingthe distance between the box D and the spindles c, and consequently therelative position of the cylinder F and the wheels B. The arms c2 aresecured in the sockets c' by set-screws c3.

To retain the crank to its adjustment rods G are provided, of which thesleeves G' (surrounding the spindles c within the wheel-hubs) form theforward ends. The arms G extend backward beside the cylinder, and haveseries of cavities g for the reception of the point of a set-screw, H.Said screw passes through a keeper, H', into one of the depressions g,and holds the arms, the ycylinder F, and the crank C firmly in theirrelative position, the three parts mentioned forming a sort oftriangular brace. The arms G end at the rear in handles G2, by which themachine is moved.

Upon lthe wheels B are friction-rin gs I,which may be secured to thespokes, as shown, or to other part of the wheel, or may be cast upon it.

J is an arm extending from the sleeve G', and having on it a fulcrum lugor lugs, j, to which is hinged a brake-lever, K. The outer end of thelever carries a brake-shoe, k, which, when the top of the lever is inits backward position, bears upon the friction-ring and prevents thebackward rotation of the wheel.

L is a spring, which tends to hold the brakeshoe down upon the ring bypushing the lever into its backward position. The brake-shoe is liftedfrom the ring I by drawing backward a rod, M, which is attached to thelower end of the lever, and which works in a standard, N, upon the armor rod G. The rod M has an enlargement at m, which works in a suitableeye, u, at the upper end of the standard. At the lower side of the eye ais a notch or socket, n', of a size to receive the part of the rod infront of the enlargement. Vheu the rod is drawn back far enough the partof the rod before the enlargement may be dropped into the notch a', andthe brake-shoe thus held away from the friction-ring I.

vThe compressed air enters the valve-chest E through a pipe, O, whichmay be provided withathrottle-valve. (Notshownnorclaimed.) Thecompressed air iills the valve-chest E and passes through a duct, P,from the valve-chest E, into the valve-chest R of the small engine S,which works the slide-valve V of the pickengine. The duct P is providedwith a cock or valve, Q, to regulate the speed ot the small engine S,and, as a result, to regulate the speed of the pick -engine. By closingthe valve Q bot-h engines may be stopped, thus rendering a valve in pipe0 unnecessary. The pistonrod s of the engine S is connected by rod s' toa crank, t, upon a shaft, T, carrying cccentrics operating bothslide-valves--that is to say, the slide-valve of engine S and theslide-valve V of thevpck-engine. The engine S contains no feature ofnovelty, being of a common form of reciprocating engine, and needs noparticular description. The crank shaft T extends through the valvechest E, passing through stuffing-boxes in the sides of the chest.

U is an eccentric on the shaft T, connected by a rod, U', to the bar V',which connects together the members of the valve V. T is a flywheel onthe shaft T. The slide-valve V has at each end a nat-faced lap-valve, n,and a D- valve, e', the former working in conjunction with theinduction-ports F', and the latter in conjunction with theeduction-ports F2 and the' exhaust-ducts F3, the latter leading throughthe side of the cylinder-casting to the outer air. The eduction-ports F2are some distance (say six inches,more or less) from the ends of thecylinder, so that they are c losed by the piston before it reaches theends ot the cylinder, so that said ports are closed by the pist0n, andthe imprisoned air forms a cushion for the piston at the ends of itsstrokes, to prevent the jar that might be occasioned by irnpingementagainst the heads ot' the cylinder. l prefer to form the eduction-portsF2 of a number .of small holes, as shown in Fig. 4, to prevent wear orother injury to the piston-packing. 1

The front end or head of the cylinder is shown at F4, and the rear headat F5. The front head has a central disk, F6, capable of turning in therim part of the head, and having two stuffing-boxes, F", through whichpass the duplicate piston-rods W of the piston W. These rods work in aguide-frame, X, and carry at the ends a socket head or heads', Y. Asshown, a single socket-head, Y, is connected to both piston-rods in themanner of a crosshead, and containing three sockets, w, for three picks.-(See Fig. 6.) The socket-headYis held upon the piston-rods W' byset-screws y, or by other suitable means. A supplemental sockethead, Z,maybe fitted into either of the three sockets w in the absence ofdrill-picks b, and the latter be held in the sockets of head Z. Thesocket-head Z may be set at any angle with that of Y.

Fig. 6 shows the picks in a row, the outer ones, b, being similar inshape, except that they are made right and left. The picks b have onestraight corner, b2, ending in an angular or square point, b3, fromwhich extend at an acute angle two sharp edges, b4 115. Cutting at aright angle to each other on the inner side are extensions or wings t6,which, when no central IOC IIO

pick, bf, is used, come nearly or quite in contact with each other incase a central pick is used. (See Figli.) The wings come nearly or quitein contact with the same. In case any material should become jammed fastbetween the picks, the next blow would force the ob ject past the pointof the wings,whei/1y it would .be free to drop out.

A single wide-spreading pick may be used, as shownin Fig. 7. This hasspreading sides ending in square points, and with a generally recessedor concavely'curved edge between the points, with small convexlycnrvedportions near the points.

Z is a lamp attached to the frame X, or to the cylinder-head', and l/isa reflector for the same. The lamp is so placed as to throw light uponlthe place being operated upon.

The operation is as follows: The compressed air, entering bothvalve-chests E and R, drives first the small engine S, which works theslidevalveV, and thenthe pick-engine. rl,he cylinder may be readilyinclined upward or downward, or to either side, by means of thehandlesG2. The machine may be pushed forward,and will retain its advancedposition, (except as to the slippingofthewheels upon theplatt'orm',)owing to the friction-brake preventing the retrograderotation ofthe wheels. To allow the retreat of the machine the brakesare raised from the friction-rings. The elevation of the cylinder maybechanged, either by changing the length of the crank by means of deviceshown at c' c2, or by means of the rods G and screws H, or adjustingboth these devices rlhe adjustment of the balance of the cylinder uponthe wheels is had by the same means. The center of gravity of thecylinder F and attached parts is in alll positions ot' the cylinderbelow the center of the wheels, and consequently the machine will besteadily supported on the wheels. To

turn the guide-frame the disk F6 may be turned after the cylinder-headbolts F8 are loosened.

- I claim as my invention- 1. The lcombination of pick-engine cylinderF, crank-axle C, hinged thereto, and the supporting-wheels B, for thepurpose set forth.

2. The combination of cylinder F and crankaxle 0, arms or rods G, andscrews H, for the purpose set forth.

3. The single piston W, provided with two piston-rods, W', and picks b,as set forth.

4. The combination, with the paired pistonrods Wl, ot' the socket-headY, securing said rods together, and constructed to receive and retainlpicks or supplemental socket Z, as set forth.

5. The combination, with the two wheels B of a mining-machine, of thefriction-brake hung eccentrically to the wheels, and constructed toprevent their retrograde rotation, substantially as set forth.

6. The combination, with the engine-cylinder F, of the distinctinduction-ports F and eduction-ports F2, with separate valves c and o',for the purpose set forth.

7 The two picks l), constructed with inward extensions or wings b, andattached to dupli cate piston-rods W', substantially as and for thepurpose set forth.

S. Thecombination of wheelspindles @,sockets c', and crankarms c2 ofcrank C, box D, and chest and cylinder E F, substantially as and for thepurpose set forth.

9. The plate or tray A, formed with side guides, a, and adapted to lieon the door of the mine, as set forth.

BENHARD YOGH.

Witnesses:

SAML. KNIGHT, Gno. H. KNIGHT.

